Population
Five year age groups
About this topic
Five year age groups show the population in standard five-year cohorts from early childhood through older age. Because each band covers the same span of years, the topic gives a clear and comparable view of an area's age structure.
This topic is useful for identifying growth or decline in specific cohorts and for comparing age patterns across places and over time. For service planning, it is often read together with service age groups, household types, and dwelling types.
Interpretation notes
- Age is reported as at Census night, so the counts are a snapshot of the resident age structure at that point in time.
- Because each band covers the same five-year span, this topic is best for exact cohort comparison rather than service-planning life stages.
Related topics
Key insight
In 2021, 50 to 54 year olds was the largest age group among residents in Ceduna (DC), accounting for 7.3% (256 people). This share was higher than Regional SA (6.7%). Since 2016, the biggest change was in 50 to 54 year olds, which increased by 71 people and 1.9 percentage points.
Section overview
Age structure - Five year age groups
Ceduna (DC) - Total persons (Usual residence)
This table summarises five year age groups for Ceduna (DC) in 2021 for persons, with comparison against Regional SA and change since 2016.
Age structure - Five year age groups snapshot
2021 distribution by category for Ceduna (DC), with comparison markers for Regional SA.
0 to 4
2021 count
233
% of total
6.6%
Change from 2016
-0.7pp
233
6.6%
-0.7pp
5 to 9
2021 count
251
% of total
7.2%
Change from 2016
+0.2pp
251
7.2%
+0.2pp
10 to 14
2021 count
218
% of total
6.2%
Change from 2016
-0.4pp
218
6.2%
-0.4pp
15 to 19
2021 count
174
% of total
5.0%
Change from 2016
-1.0pp
174
5.0%
-1.0pp
20 to 24
2021 count
183
% of total
5.2%
Change from 2016
-0.8pp
183
5.2%
-0.8pp
25 to 29
2021 count
240
% of total
6.8%
Change from 2016
+0.6pp
240
6.8%
+0.6pp
30 to 34
2021 count
227
% of total
6.5%
Change from 2016
+0.5pp
227
6.5%
+0.5pp
35 to 39
2021 count
199
% of total
5.7%
Change from 2016
-0.5pp
199
5.7%
-0.5pp
40 to 44
2021 count
184
% of total
5.2%
Change from 2016
-1.1pp
184
5.2%
-1.1pp
45 to 49
2021 count
210
% of total
6.0%
Change from 2016
-0.9pp
210
6.0%
-0.9pp
50 to 54
2021 count
256
% of total
7.3%
Change from 2016
+1.9pp
256
7.3%
+1.9pp
55 to 59
2021 count
232
% of total
6.6%
Change from 2016
-0.6pp
232
6.6%
-0.6pp
60 to 64
2021 count
242
% of total
6.9%
Change from 2016
-0.1pp
242
6.9%
-0.1pp
65 to 69
2021 count
212
% of total
6.0%
Change from 2016
+0.2pp
212
6.0%
+0.2pp
70 to 74
2021 count
189
% of total
5.4%
Change from 2016
+0.9pp
189
5.4%
+0.9pp
75 to 79
2021 count
130
% of total
3.7%
Change from 2016
+1.1pp
130
3.7%
+1.1pp
80 to 84
2021 count
64
% of total
1.8%
Change from 2016
+0.5pp
64
1.8%
+0.5pp
85 and over
2021 count
47
% of total
1.3%
Change from 2016
-0.6pp
47
1.3%
-0.6pp
Chart view
Age structure - Five year age groups change
Absolute change in category counts between 2016 and 2021.
0 to 4
-15
-0.7pp
5 to 9
+12
+0.2pp
10 to 14
-8
-0.4pp
15 to 19
-32
-1.0pp
20 to 24
-23
-0.8pp
25 to 29
+30
+0.6pp
30 to 34
+21
+0.5pp
35 to 39
-11
-0.5pp
40 to 44
-30
-1.1pp
45 to 49
-24
-0.9pp
50 to 54
+71
+1.9pp
55 to 59
-15
-0.6pp
60 to 64
+5
-0.1pp
65 to 69
+15
+0.2pp
70 to 74
+35
+0.9pp
75 to 79
+43
+1.1pp
80 to 84
+19
+0.5pp
85 and over
-19
-0.6pp
Data table
Five year age groups for Ceduna (DC). Age structure - Five year age groups. 2021 and 2016 counts, percentages, and change compared with Regional SA.
| Category | 2021 | 2016 | Change | |||||
|---|---|---|---|---|---|---|---|---|
| Count | % | Regional SA% | Count | % | Regional SA% | Count | pp | |
| 0 to 4 | 233 | 6.6% | 4.9% | 248 | 7.3% | 5.5% | -15 | -0.7pp |
| 5 to 9 | 251 | 7.2% | 5.7% | 239 | 7.0% | 6.1% | +12 | +0.2pp |
| 10 to 14 | 218 | 6.2% | 6.1% | 226 | 6.6% | 6.0% | -8 | -0.4pp |
| 15 to 19 | 174 | 5.0% | 5.3% | 206 | 6.0% | 5.6% | -32 | -1.0pp |
| 20 to 24 | 183 | 5.2% | 4.6% | 206 | 6.0% | 4.8% | -23 | -0.8pp |
| 25 to 29 | 240 | 6.8% | 5.1% | 210 | 6.2% | 5.1% | +30 | +0.6pp |
| 30 to 34 | 227 | 6.5% | 5.4% | 206 | 6.0% | 5.3% | +21 | +0.5pp |
| 35 to 39 | 199 | 5.7% | 5.4% | 210 | 6.2% | 5.2% | -11 | -0.5pp |
| 40 to 44 | 184 | 5.2% | 5.2% | 214 | 6.3% | 5.9% | -30 | -1.1pp |
| 45 to 49 | 210 | 6.0% | 5.8% | 234 | 6.9% | 6.7% | -24 | -0.9pp |
| 50 to 54 | 256 | 7.3% | 6.7% | 185 | 5.4% | 7.1% | +71 | +1.9pp |
| 55 to 59 | 232 | 6.6% | 7.2% | 247 | 7.2% | 7.5% | -15 | -0.6pp |
| 60 to 64 | 242 | 6.9% | 7.7% | 237 | 7.0% | 7.3% | +5 | -0.1pp |
| 65 to 69 | 212 | 6.0% | 7.4% | 197 | 5.8% | 7.1% | +15 | +0.2pp |
| 70 to 74 | 189 | 5.4% | 6.8% | 154 | 4.5% | 5.5% | +35 | +0.9pp |
| 75 to 79 | 130 | 3.7% | 4.8% | 87 | 2.6% | 3.9% | +43 | +1.1pp |
| 80 to 84 | 64 | 1.8% | 3.1% | 45 | 1.3% | 2.6% | +19 | +0.5pp |
| 85 and over | 47 | 1.3% | 2.8% | 66 | 1.9% | 2.7% | -19 | -0.6pp |
| Total | 3,505 | 100.0% | 100.0% | 3,408 | 100.0% | 100.0% | +97 | 0.0pp |